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介绍了美国DVSI公司的高性能语音压缩解压缩芯片AMBE-2020,包括其应用及工作原理特性。MC14LC5480是Motorola公司的一款通用单信道PCM编码/解码器。TMS320F2812是Texas Instruments公司的一款高性能DSP。本文设计了基于AMBE-2020、MC14LC5480和TMS320F2812构成的加密通信系统,能够在防窃听的前提下实现实时的通信,具有语音音质好和编码波特率低的优点。
Introduces AMBE-2020, a high-performance voice compression and decompression chip from DVSI Company of America, including its application and working principle. The MC14LC5480 is a general purpose single channel PCM encoder / decoder from Motorola. The TMS320F2812 is a high-performance DSP from Texas Instruments. In this paper, an encrypted communication system based on AMBE-2020, MC14LC5480 and TMS320F2812 is designed to realize real-time communication under the premise of preventing eavesdropping. It has the advantages of good voice quality and low coding baud rate.